/**
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.workhorse.exec;


/**
 * Lifecycle listener for an {@link Execution}.
 */
public interface ExecutionListener
{
    /**
     * Called at the start of an {@code Execution}
     * @param execution The execution that is starting
     */
    public void onStart(Execution execution);

    /**
     * Called at the end of an {@code Execution}, prior to completing it.
     * @param execution The execution that is ending
     */
    public void onEnd(Execution execution);

    /**
     * Called before pausing an {@code Execution}.
     * @param execution The execution that is pausing
     */
    public void onPause(Execution execution);

    /**
     * Called before resuming an {@code Execution}.
     * @param execution The execution that is resuming
     */
    public void onResume(Execution execution);

    //TODO onMerge(Execution execution)?
}
